A
DVANCED
L
INEAR
D
EVICES,
I
NC.
ALD4301A/ALD4301
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER
GENERAL DESCRIPTION
The ALD4301A/ALD4301 is a monolithic high performance quad
voltage comparator built with advanced silicon gate CMOS technol-
ogy. It features very high typical input impedance of 10
12
Ω;
low input
bias current of 10pA; fast response time of 300ns; very low power
dissipation of 55µA per comparator; high output drive and single +5V
or dual
±5V
power supply operation.
The input voltage range includes ground, making this comparator ideal
for low level signal detection with high source impedance. The outputs
are open-drain configuration, allowing maximum application flexibility.
The outputs can be connected to a higher external voltage than V
+
and
used in a wired-OR connection with other open drain circuits such as
ALD2301/ALD2303. They can also be used with push-pull output
types such as ALD2302/ALD4302 voltage comparators simultaneously
with open drain comparators using a common V+. The ALD4301A/
ALD4301 is ideal for a great variety of voltage comparator applica-
tions, especially detection circuits requiring very low input currents
and low standby power, yet retaining high output current capability.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
Fanout of 30 LS TTL loads
Low supply current of 55µA/comparator typical
Pinout/Functional equivalent to LM393 types
Extremely low input bias currents -- 10pA typical
Virtually eliminates source impedance effects
Low operating supply voltage of 3V to 12V
Single +5V and dual supply
±5V
operation
High speed for both large signal and low level
signals -- 300ns typical for TTL inputs
CMOS, NMOS and TTL compatible
Wired-OR open drain outputs
High output sinking current -- 60mA typical
Low supply current spikes
High gain
APPLICATIONS
• High source impedance voltage
comparison circuits
• Dual/Quad limit window comparator
• Power supply voltage monitor
• Photo-detector sensor circuit
• Relay or LED driver
• Oscillators
• Battery operated instruments
• Remote signal detection
PIN CONFIGURATION
02
01
V
+
-IN
1
+IN
1
-IN
2
+IN
2
1
14
03
04
GND
+IN
4
-IN
4
+IN
3
-IN
3
2
13
3
4
12
11
5
10
6
9
7
8
DB, PB, SB PACKAGE
BLOCK DIAGRAM
V
+
INVERTING INPUT
- IN
1
(4)
NONINVERTING INPUT
+ IN
1
(5)
INVERTING INPUT
- IN
2
(6)
NONINVERTING INPUT
+ IN
2
(7)
INVERTING INPUT
- IN
3
(8)
(3)
ORDERING INFORMATION
Operating Temperature Range *
-55°C to +125°C
0°C to +70°C
0°C to +70°C
14-Pin
CERDIP
Package
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
-
(2) OUT
1
+
-
(1) OUT
2
+
-
(14) OUT
3
ALD 4301ADB
ALD 4301DB
ALD4301ASB
ALD4301SB
ALD4301APB
ALD4301PB
NONINVERTING INPUT
+ IN
3
(9)
INVERTING INPUT
- IN
4
(10)
NONINVERTING INPUT
+ IN
4
(11)
+
-
(13) OUT
4
+
* Contact factory for industrial temperature range
(12)
© 2005 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ALD [ ADVANCED LINEAR DEVICES ]
